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It takes so much heat to melt ice or evaporate water because extra energy is required to break the hydrogen bonds between water molecules.
<h3>
Hydrogen bond</h3>
Hydrogen bonding is an electrostatic force of attraction between a hydrogen atom found between a pair of other atoms having a high affinity for electrons.
Hydrogen bonds cause water to be exceptionally attracted to each other creating cohesion.
It takes so much heat to melt ice or evaporate water because extra energy is required to break the hydrogen bonds between water molecules.
Find out more on Hydrogen bond at: brainly.com/question/12798212
Answer:
la constante d'équilibre changerait
Explanation:
3Mg(s) + 2FeCl3(aq) → 3 MgCl2(aq) + 2Fe(s)
Explanation:
Redox reaction is a reduction-oxidation reaction in which oxidation states of atoms involved in the reaction are changed. The elements that receive electrons are considered to be reduced while the element that donates the electrons is considered to be oxidized. In the case of this reaction, Fe in the FeCl₃ is reduced into Fe by gaining 3 electrons - while Mg is oxidized to MgCl₂ because it donates 2 electrons.
If you check the moles of Mg, FeCl₃, Fe, and MgCl₂; you'll get to notice that the exchange of electron is balanced at 6.
Answer:
0.19615 M
Explanation:
Calculation of the moles of
as:-
Mass = 10.91 g
Molar mass of
= 278.1 g/mol
The formula for the calculation of moles is shown below:
Thus,

According to the reaction shown below:-

1 mole of
is produced when 1 mole of
undergoes reaction.
0.03923 mole of
is produced when 0.03923 mole of
undergoes reaction.
Mole of
= 0.03923 mole
Volume = 200.0 mL = 0.2 L ( 1 mL = 0.001 L )
Molarity is defined as the number of moles present in one liter of the solution. It is basically the ratio of the moles of the solute to the liters of the solution.
The expression for the molarity, according to its definition is shown below as:

So,

<u>0.19615 M is the molarity of the
solution.</u>